三层+存储过程实现分页示例代码

前端技术 2023/09/03 .NET
前台设计：
复制代码 代码如下:

<%@ Page Language=\"C#\" AutoEventWireup=\"true\" CodeBehind=\"paging.aspx.cs\" Inherits=\"五二一练习.paging\" %>
<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\">
<head runat=\"server\">
<title></title>
<script src=\"js/Jquery1.7.js\" type=\"text/javascript\"></script>
<script type=\"text/javascript\">
$(function () {
$(\'#txtPagination\').focus(function () {
$(this).val(\"\");
})
})
</script>
</head>
<body>
<form id=\"form1\" runat=\"server\">
<div>
<asp:GridView ID=\"GridView1\" runat=\"server\" AutoGenerateColumns=\"False\"
Height=\"336px\" Width=\"685px\">
<Columns>
<asp:BoundField DataField=\"Id\" HeaderText=\"编号\" />
<asp:BoundField DataField=\"NewsTitle\" HeaderText=\"标题\" />
<asp:BoundField DataField=\"NewsContent\" HeaderText=\"内容\" />
<asp:BoundField DataField=\"CreateTime\"
DataFormatString=\"{0:yyyy-MM-dd hh:mm:ss}\" HeaderText=\"发布时间\" />
</Columns>
</asp:GridView>
<asp:LinkButton ID=\"btnFirst\" runat=\"server\" onclick=\"btnFirst_Click\">第一页</asp:LinkButton>
<asp:LinkButton
ID=\"btnPre\" runat=\"server\" onclick=\"btnPre_Click\">上一页</asp:LinkButton>
<asp:LinkButton ID=\"btnNext\"
runat=\"server\" onclick=\"btnNext_Click\">下一页</asp:LinkButton>
<asp:LinkButton ID=\"btnLast\" runat=\"server\" onclick=\"btnLast_Click\">最后一页</asp:LinkButton><asp:TextBox
ID=\"txtPagination\" runat=\"server\"></asp:TextBox>
<asp:LinkButton ID=\"btnSkip\" runat=\"server\" onclick=\"btnSkip_Click\">GO</asp:LinkButton>
</div>
</form>
</body>
</html>

首先在数据库创建存储过程
复制代码 代码如下:

create proc usp_role_GetDateByPageIndex
@pageSize int,
@pageIndex int
as
begin
select * from
(
select *,ROW_NUMBER() over(order by role_id) as rownumber from role) as tbl
where tbl.rownumber between (@pageSize*(@pageIndex-1)+1) and @pageIndex*@pageSize
end
exec usp_role_GetDateByPageIndex 5,3

在项目中添加BLL,DAL,DataAccess,MODEL层
在DAL中写一个方法：
复制代码 代码如下:

//自己写的方法，分页获取数据列表
public DataTable GetListDataTable(int PageSize, int PageIndex)
{
SqlParameter[] parameters = {
new SqlParameter(\"@PageSize\", SqlDbType.Int),
new SqlParameter(\"@PageIndex\", SqlDbType.Int)
};
parameters[0].Value = PageSize;
parameters[1].Value = PageIndex;
return DbHelperSQL.RunProcedureDataTable(\"usp_role_GetDateByPageIndex\", parameters);
}
在BLL中调用GetListDataTable：
public DataTable GetListDataTable(int pagesize, int pageindex)
{
return dal.GetListDataTable(pagesize, pageindex);
}
在DbHelper中添加RunProcedureDataTable方法：
public static DataTable RunProcedureDataTable(string stroreProcName, IDataParameter[] parameters)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataTable dt = new DataTable();
connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand(connection, stroreProcName, parameters);
sqlDA.Fill(dt);
connection.Close();
return dt;
}
}

然后在后台调用即可：
复制代码 代码如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
namespace 练习
{
public partial class paging : System.Web.UI.Page
{
int pagesize = 10;
int pageindex = 1;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ViewState[\"pageindex\"] = 1;
LadaData();
GetListPageindex();
}
}
private void GetListPageindex()
{
BLL.T_News1 bnews = new BLL.T_News1();
int totalcount = bnews.GetRecordCount(\"\");
if (totalcount % pagesize == 0)
{
ViewState[\"lastpageindex\"] = totalcount / pagesize;
}
else
{
ViewState[\"lastpageindex\"] = totalcount / pagesize + 1;
}
}
private void LadaData()
{
BLL.T_News1 bnews = new BLL.T_News1();
DataTable dt = bnews.GetListDataTable(pagesize, Convert.ToInt32(ViewState[\"pageindex\"]));
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
//第一页
protected void btnFirst_Click(object sender, EventArgs e)
{
ViewState[\"pageindex\"] = 1;
LadaData();
}
//上一页
protected void btnPre_Click(object sender, EventArgs e)
{
int pageindex = Convert.ToInt32(ViewState[\"pageindex\"]);
if (pagesize>1)
{
pageindex--;
ViewState[\"pageindex\"] = pageindex;
LadaData();
}
}
//下一页
protected void btnNext_Click(object sender, EventArgs e)
{
int pageindex = Convert.ToInt32(ViewState[\"pageindex\"]);
if (pageindex<Convert.ToInt32(ViewState[\"lastpageindex\"]))
{
pageindex++;
ViewState[\"pageindex\"] = pageindex;
LadaData();
}
}
//最后一页
protected void btnLast_Click(object sender, EventArgs e)
{
ViewState[\"pageindex\"] = ViewState[\"lastpageindex\"];
LadaData();
}
//跳转页面
protected void btnSkip_Click(object sender, EventArgs e)
{
int result;
if (int.TryParse(txtPagination.Text, out result) == true)
{
ViewState[\"pageindex\"] = txtPagination.Text.Trim();
LadaData();
}
else
{
txtPagination.Text = \"请输入合法的数字\";
}
}
}
}

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